What is it that should trace the insuperable line? ...The question is not, Can they reason? nor Can they talk? but, Can they suffer?

As to the evil which results from censorship, it is impossible to measure it, because it is impossible to tell where it ends.

The addability of the happiness of different subjects is a postulum without which all political reasonings are at a stand

Reputation is the road to power

If Christianity needed an Anti-Christ, they needed look no farther than Paul.

I don't care whether animals are capable of thinking; all I care about is that they are capable of suffering!

A civilized society must count animals as worthy of moral consideration and ethical treatment. The question is not, Can they reason? nor Can they talk? but, Can they suffer?